Magnum Dimensions CMW3012-H 3000 Watt, 12 Volt DC, High Frequency Compact Sine Wave Inverter Operating temperature: -0 C to +40 C (32 F to 104 F) Dimensions (l x w x h): 19 x 9 x 4.5 Mounting: Shelf (top or bottom up) or bulkhead (DC terminals MUST be facing up) Weight 13 lbs